Question about Dell Dimension 8400 power supply ** FREE ** (D8400SATA300W24PINB) Power Supply

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Dell 8400 boot up problems

Recently my computer booted up with fan goin really fast and it shut itself off.Turned on again all i got was a black screen with fan still really fast at first then slowing.After turning on and off a couple of times i got a message saying pci express card operating in x1 mode press f1 to cont or f2 setup utility. Any suggestions ?

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  • Rob Reichardt Feb 05, 2009

    Several times the system freezed while working, everytime by pushing the start button about 20 sec it shuts down. After start up again the ventilator (CPU) was going very fast, only three lights keyboard flashed, dvd light flashed, some movements in HDD, nothing else, black screen. About 6 months ago a few times before the same problem but after a few attempts the computer starts up normal. At this moment it stays the same with fast ventilator. Battery is 2.85 V but bios time stayed normal. So I don't think it is the battery.

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  • 1,183 Answers

Hi,
There could be problem with the motherboard. You can try resetting the same.
1.Press F2 to enter the system setup.
2. Use the down arrow key and go to the option that says maintaince
3. Press enter and key down to the option CMOS defaults
4. Hit enter and reset defaults
5. Press escape and save changes and exit
6. check if the system boots up.


Before you perform the steps given above, unplug all external peripherals from the system like printers and webcams speakers etc. Your information is safe and there would not harm done to the information stored on the hardrive .


Thanks
proton

Posted on Nov 01, 2008

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2 Answers

Hi, I ahe a dell computer model number dccy, i want to know why it turn off by itself, when it get to hot, when i have more than ten minute working with it, why if turn off


When the CPU in the computer or laptopoverheats then it will shut down (i.e. thermal overload) and won't boot upagain until it has cooled down. If this is the problem is not fixed then theCPU will eventually fail.
A faulty fan causes this problem or the fan and heat sink assembly are cloggedwith dust.
Check the CPU fan to see if it spins freely, if not replace the fan. If the fan and heat sink is clogged withdust the remove the dust and make sure the vents are clear and dust free. Use acan of compressed air to do this.

Aug 16, 2011 | Antec System Power Supplies

1 Answer

My Dell 8400 won't turn, no fan, anything.


Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect or boot up your hard drive

Test all leads that attach from the ((motherboard to your hard drive)) including electrical extensions,IDE,SATA

the leads from your motherboard to your hard drive make sure they have a secure connection and are not faulty or just replace them there probably old and faulty

make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty or just replace them they are probably old and faulty ?
dont forget to vote
hope this helps

Feb 05, 2011 | Dell Dimension 8400 power supply ** FREE...

1 Answer

I will power the computer up and use it for awhile and it will shut down on it's own. When I try to pwer it again the power button is blinking amber. Sometimes I can start it and use it for hours and...



Test your PSU or replace it if your power supply units fan is not working your PSU is faulty

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect/ boot up

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them there probably old and faulty
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electrical extensions or just replace them they are probably old and faulty a computer needs its connections to have an end so any faulty leads will end up with a computer error


hope this helps


Jan 26, 2011 | Dell Dimension 8400 power supply ** FREE...

1 Answer

Power supply fan runs at increasing high speeds as soon as the power cord is plugged in. PC not booted up when it does this. The computer only displays the bios information and for awhile nothing would...


remove and replace the power supply, before it does more damage. It sounds like it's been spiked.

Just hope it hasn;t affected the motherboard as well.

Please rate my help++++Thanks for using fixya

Mar 21, 2010 | Dell Dimension 8400 power supply ** FREE...

1 Answer

Replaced the dell 8400 power suppley, -now system says floppy disk failure (I don't have a floppy) CD R/W have power, but don't work? Is there a schematic available?


Hello my friend probably is a bios setting,somehow you hit default settings or flash your bios and you turned it on.Go into bios(hitting del on boot) and on the general page there will be a setting for a floppy drive, likely something like floppy 3.5" 1.4mb choose it and hit enter and you should be able to disable the floppy drive.If there is no setting, look for a HALT ON ALL ERRORS setting and change it to keyboard onl.

Feb 06, 2010 | Dell Dimension 8400 power supply ** FREE...

1 Answer

Power supply fan runs at increasing high speeds as soon as the power cord is plugged in. PC not booted up when it does this.


Generic response.

As I understand your question, your fan is tunning when your computer is off or asleep or hybernating. This is only a llittle unusual ...

Bear with me ...

Many fans in modern computers adjust their speed to meet the needs of the computer. They slow down when there is not a lot of heat and speed up with there is increased heat.

It is very important that you not disrupt the air flow within a computer bu leaving the side cover off, for example.

If heat is a problem in your situation, you can probably add a second fan to the back of your computer.

Very important that your computer can breathe. You May want to check inside for dust and lint. clean with care- Static electricity KILLS delicate circuits.

Oct 21, 2009 | Dell Dimension 8400 power supply ** FREE...

2 Answers

Dell Dimension power problem


There are several different solutions for this as posted at this Forum.

http://www.tomshardware.com/forum/51352-2-dell-dimension-8400-wont-boot

1) A lot of people have just removed the Jumper for the CMOS and turned the Power back on and back off and replaced the jumper and/or removed the battery.

2) Several people have reseated the Memory and after booting back up it worked.

3) A few had to replace the Mother Board and CPU but in this instance they had to also replace the Case because the Dell case wasn't really fit for the heat of from the CPU.

4) I had the exact same problem and luckily replacing the Power Supply fixed this for me. I had to cut out the back of the Dell case for the toggle on/off switch but when I tested the old Power Supply it was only getting 5amps and this was causing the Amber/Orange/Yellow light to constantly flash.

I hope this helps!

Jan 20, 2009 | Dell Dimension 8400 power supply ** FREE...

1 Answer

Dell Dim 8400 Issues


Hi Steve,
The problem that you are facing is most likely because of bad harddrive. As you have already replaced the RAM. To confim the same , run a diagnostics on the Hardrive. You can run the same in two ways .

Check if have the utilitu partision still left on the hardrive
1. Tap on the F12 key 5 - 6 times when you see the Dell splash screen , before windows starts to load.
2. Select Hardrive diagnostics or IDE diagnostics

If the above is no there , look for the dell Rescouce cd
1. Boot the system using the dell Resource Cd.
2. Select 32 bit diagnostics from the menu
3. Run a custom test on the hdd.

If the hardrive fails , replace the same, otherwise try swaping it connector cable with the optical cable.

Thanks

Proton

Oct 11, 2008 | Dell Dimension 8400 power supply ** FREE...

4 Answers

Power shuts down while booting


most likely, the PS is saving itself from thermal meltdown. 1.) verify that the PS cooling fan is spinning. If it is, continue to step 2. If not spinning or spinning slowly, open PS and thoroughly clean using compressed air outside. 2.) remove PS connectors to mainboard and re-insert them. Repeat this 3 times to "wipe" the contacts to clean metal.

Jun 18, 2007 | Dell Dimension 2200 power supply ** FREE...

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